7 CFR 52.38c - Statistical sampling procedures for lot inspection of processed fruits and vegetables by attributes.

View all text of Subjgrp 709 [§ 52.34 - § 52.40]

§ 52.38c - Statistical sampling procedures for lot inspection of processed fruits and vegetables by attributes.

(a) General. Single sampling plans shall be used as the lot sampling plan for attributes standards under either of the following conditions:

(1) Sampling of the product shall be made during the production period. No grade will be assigned to individual sample units. One grade determination only will be made at the end of the production period for the inspection lot.

(2) Sampling of the product shall be made when the inspection lot is located in a warehouse, truck, railroad car, or other similar conveyance.

(b) Sample size. Samples shall be randomly selected from each inspection lot in the exact number of sample units indicated for the lot size in tables XI through XIV as applicable for canned, frozen, dried, or dehydrated fruits and vegetables.

Table XI—Canned or Similarly Processed Fruits, Vegetables, and Products Containing Units of Such Size and Character as To Be Readily Separable

[Lot sample size]

Container size group	Lot size (number of containers)								Group 1: Any type container of a volume not exceeding that of a No. 303 size can	12,000 or less	12,001-39,000	39,001-84,000	84,001-145,000	Group 2: Any type of container of a volume exceeding that of a No. 303 size can but not exceeding that of a No. 3 cylinder size can	6,000 or less	6,001-19,500	19,501-42,000	42,001-72,500	Group 3: Any type of container of a volume exceeding that of a No. 3 cylinder size can, but not exceeding that of a No. 12 size can	3,000 or less	3,001-9,750	9,751-21,000	21,001-36,250	Group 4: Any type of container of a					volume exceeding that of a No. 12					Convert to equivalent number of 6-lb. net weight containers and use group 3					size can.					Lot inspection: Sample size (number of sample units)	6	13	21	29

Table XII—Frozen or Similarly Processed Fruits, Vegetables, and Products Containing Units of Such Size and Character as To Be Readily Separable

[Lot sample size]

Container size group	Lot size (number of containers)								Group 1: Any type of container of 1 lb or less net weight	9,600 or less	9,601-31,200	31,201-67,200	67,201-116,000	Group 2: Any type of container over 1 lb but not over 2 1/2 lb net weight	4,800 or less	4,801-15,600	15,601-33,600	33,601-58,000	Group 3: Any type of container over					Convert to equivalent number of 2 1/2-lb. containers and use group 2					2 1/2 lbs.					Lot inspection: Sample size (number of sample units)	6	13	21	29

Table XIII—Canned, Frozen, or Otherwise Processed Fruits, Vegetables, Related Products of a Comminuted, Fluid or Homogeneous State

[Lot sample size]

Container size group	Lot size (number of containers)								Group 1: Any type of container of 1 lb or less	18,000 or less	18,001-58,500	58,501-126,000	126,001-217,000	Group 2: Any type of container exceeding 1 lb. but not exceeding 60 oz	12,000 or less	12,001-39,000	39,001-84,000	84,001-145,000	Group 3: Any type of container exceeding 60 oz but not exceeding 10 lb	6,000 or less	6,001-19,500	19,501-42,000	42,001-72,500	Group 4: Any type of container					Convert to equivalent number of 6-lb. containers and use group 3.					exceeding 10 lbs.					Lot inspection: Sample size (number of sample units)	6	13	21	29

Table XIV—Dehydrated (Low-Moisture) Fruits, and Vegetables

[Lot sample size]

Container size group	Lot size (number of containers)								Group 1: Any type of container of 1 lb or less net weight	7,200 or less	7,201-23,400	23,401-50,400	50,401-87,000	Group 2: Any type of container over 1 lb but not over 6 lb net weight	2,400 or less	2,401-7,800	7,801-16,800	16,801-29,000	Group 3: Any type of container over 6					Convert to equivalent number of 5-lb. containers and use group 2.					lbs.					Lot inspection: Sample size (number of sample units)	6	13	21	29

(c) Determining compliance. (1) An inspection lot meets the requirements of a quality grade if the number of defects (or defectives) is equal to or less than the acceptance numbers of all classes of defects.

(2) An inspection lot fails the requirements of a quality grade if the number of defects (or defectives) exceeds the acceptance number for one or more classes of defects.

(d) Lot single sampling plans for processed fruits and vegetables. (1) Tables XV through XIX contain the lot single sampling plans for each of five different standard sample unit sizes. The plans within each table are listed according to increasing values of Acceptable Quality Levels (AQL's).

(2) AQL values of 10.0 or less may be expressed either in “defects per hundred units” or in “percent defective units.” The same sampling plans are used for both. Separate sampling plans must be used for AQL values greater than 10.0.

(3) A separate lot single sampling plan is chosen for each class of defects (or defectives) by first specifying the desired AQL, the appropriate standard sample unit size, and the number of sample units as specified in § 52.38c (b) of this subpart. The quality levels associated with the Pa=50% and Pa=10% levels are given in the instructional manual.

Table XV—Lot Single Sampling Plans

[Standard sample unit size=6]

	Number of sample units				6	13	21	29	Acceptance numbers—quality levels expressed as defects per 100 units or percent defective—AQL					1.0	1	2	3	4	1.5	1	3	4	5	2.5	3	4	6	8	4.0	4	6	9	11	5.0	4	7	11	14	6.5	5	9	13	17	8.5	6	11	16	21	10.0	7	12	19	24	Quality levels expressed as defects per 100 units only					12.5	8	15	22	29	15.0	9	17	26	35	20.0	12	22	33	44	25.0	14	27	41	54	33.0	18	34	52	70	40.0	21	40	62	83	50.0	25	49	76	102	65.0	31	62	97	131	85.0	40	80	124	168	100.0	46	92	144	196	150.0	66	135	212	288	250.0	105	218	344	469	Quality levels expressed as percent defective only					12.5	8	15	22	29	15.0	9	17	25	34	20.0	11	21	33	43	25.0	13	26	39	53	33.0	16	32	50	67	40.0	19	38	59	80	50.0	23	46	72	98

Table XVI—Lot Single Sampling Plans

[Standard sample unit size=13]

	Number of sample units				6	13	21	29	Acceptance numbers—quality levels expressed as defects per 100 units or percent defective—AQL					0.65	1	3	4	5	1.0	2	4	6	7	1.5	3	5	8	10	2.5	4	8	11	15	4.0	6	11	16	22	5.0	7	13	20	26	6.5	9	17	25	33	8.5	11	21	31	41	10.0	12	24	36	48	Quality levels expressed as defects per 100 units only					12.5	15	29	44	58	15.0	17	34	51	69	20.0	22	43	67	90	25.0	27	53	82	110	33.0	34	68	106	143	40.0	40	81	126	171	50.0	49	99	156	211	65.0	62	127	199	271	85.0	80	163	257	350	100.0	92	190	300	409	Quality levels expressed as percent defective only					12.5	15	28	43	58	15.0	17	33	51	68	20.0	21	42	65	88	25.0	26	51	80	108	33.0	32	66	103	139	40.0	38	78	123	166	50.0	46	95	150	204

Table XVII—Lot Single Sampling Plans

[Standard sample unit size=25]

	Number of sample units				6	13	21	29	Acceptance numbers—quality levels expressed as defects per 100 units or percent defective—AQL					0.4	2	3	5	6	0.65	3	5	7	8	1.0	4	6	9	12	1.5	5	9	13	16	2.5	7	13	19	25	4.0	10	19	29	38	5.0	12	23	35	46	6.5	15	29	44	58	8.5	19	36	56	74	10.0	21	42	64	86	Quality levels expressed as defects per 100 units only					12.5	26	51	79	106	15.0	30	60	93	126	20.0	39	78	122	165	25.0	48	96	150	203	33.0	61	124	195	265	40.0	73	149	234	318	50.0	89	183	289	394	65.0	114	235	372	507	Quality levels expressed as percent defective only					12.5	25	50	78	105	15.0	30	59	92	125	20.0	38	77	120	163	25.0	46	94	148	200	33.0	59	121	191	260	40.0	70	145	228	312	50.0	85	177	281	385

Table XVIII—Lot Single Sampling Plans

[Standard sample unit size=50]

	Number of sample units				6	13	21	29	Acceptance numbers—quality levels expressed as defects per 100 units or percent defective—AQL					0.15	1	3	4	5	0.25	2	4	5	7	0.4	3	5	8	10	0.65	4	8	11	15	1.0	6	11	16	21	1.5	8	15	22	29	2.5	12	23	35	46	4.0	18	34	53	70	5.0	21	42	64	86	6.5	27	53	82	110	8.5	34	67	105	142	10.0	39	78	122	165	Quality levels expressed as defects per 100 units only					12.5	48	96	150	203	15.0	56	114	178	242	20.0	73	149	234	318	25.0	89	183	289	394	33.0	115	239	377	514	40.0	138	287	454	620	50.0	170	355	563	769	Quality levels expressed as percent defective only					12.5	47	95	149	202	15.0	55	112	177	240	20.0	71	147	231	315	25.0	87	181	286	390	33.0	112	234	372	508	40.0	134	281	446	611	50.0	164	346	552	756

Table XIX—Lot Single Sampling Plans

[Standard sample unit size=100]

	Number of sample units				6	13	21	29	Acceptance numbers—quality levels expressed as defects per 100 units or percent defective—AQL					0.1	2	3	5	6	0.15	3	4	6	8	0.25	4	6	9	12	0.4	5	9	13	17	0.65	7	13	20	26	1.0	10	19	29	38	1.5	14	27	41	54	2.5	21	42	64	86	4.0	32	64	99	134	5.0	39	78	122	165	6.5	49	99	156	211	8.5	63	128	200	272	10.0	73	149	234	318	12.5	89	183	289	394	15.0	105	218	344	469	20.0	138	287	454	620	25.0	170	355	563	769	33.0	221	463	736	1,008	40.0	266	558	888	1,216	50.0	329	692	1,103	1,513	Quality levels expressed as percent defective only					12.5	88	182	287	392	15.0	104	216	342	467	20.0	136	284	450	615	25.0	167	351	558	763	33.0	217	457	728	999	40.0	260	549	877	1,203	50.0	320	680	1,088	1,494

[43 FR 10542, Mar. 14, 1978. Redesignated at 46 FR 63203, Dec. 31, 1981]